Self-heating soldering-iron.



Patented Mar. 17, 1914.

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J. L. PINNEGAN.

J- TEEBING GUARDIAN.

SELF HEATING SOLDERING IRON.

APPLIOATION FILED NOV. 80, 1909.

jvu human TED STATES JOHN L. FINNEGAN, BY JOHN TREBING,

GUARDIAN, 0F NASHVILLE, TENNESSEE.

SELF-HEATING SOLDERING-IRON.

'1 b all whom it may concern Be it known that I, JOHN 'lnnujmo, acitizen of the United States, residing at Nashville, in the county ofDavidson, State of Tennessee, have been appointed guardian for JOHN L.FINNEGAN, who has invented new and useful Improvements in Self-HeatingSoldering-Irons, of which the following is a specification.

This invention relates broadly to self heating tools and moreparticularly to a self heating soldering iron.

The principal object of this invention is to provide a soldering ironwherein the intensity of the heating flame may be regulated by amanually cont-rolled throttle.

Another object of this invention is to provide a self heating tool withan interchangeable work head.

A further object of this invention is to provide a self heating tool,particularly a soldering iron with a work head in which solder ormaterial adapted to be rendered fluid by application of heat, isconfined within the head itself and arranged to be distributed throughheated channels to the point of desired application.

A still further object of this invention is to provide a self heatingtool with a self contained supporting rack which permits the tool to beconveniently laid aside withp out danger of burning its support.

Other and further objects of this invention will in part be obvious andwill in part 5' he pointed out in the specification herein- 1 afterfollowing.

Figure 1 is an elevation showlng the improved tool on a longitudinalvertical section. F 2 is a transverse section taken through Fig. 1.imn'iediately forward of the supporting bracket upon lines A-r\ of Fig.1.

Referring more particularly to Fig. 1 which is a sectional longitudinalview of my improved soldering iron and torch combined, the liquid fuelis conducted to the tool by means of a heat insulated hollow wire 54.,which wire is connected with the tool by means of a swivel joint A smallneedle valve 56 is arranged in a bypass through the main fuel passage5L, and is adapted to permit a small amount of Specification of LettersPatent.

Application filed November 30, 1909.

Patented Mar. 17, 1914.

Serial No. 530.660.

fuel to be admitted to the burner tip 57 at all times during the use ofthe tool in order to maintain a pilot [lame at the burner tip 57. Toprevent the pilot lame from being extinguished by drafts of air, theburner tip Si is surrounded by a wind guard 58. A. valve 59 is providedin the main fuel passage 51, and is substantially in the nature 1 of athrottle valve. The valve 59 is normally maintained in a closedrelationship by means of a resilient spring 50, which tends to keep thevalve head 49 against the valve seat 48. A thumb piece 47 however, isarranged upon the valve stem in such manner as to enable the operator toopen the valve 59 against the pressure of the spring 50 and to regulatethe flow of liquid fuel within any desired relationship betweenpre-determined limits, which limits are the strength of the pilot flamehereinbefore specified, and the pro-determined position of a regulatingvalve 62, which will be more specifically described hereinafter. A head4:6 for the valve stem 59, is provided with a transverse opening andalso the valve stem 3!) is provided with a transverse opening, whichopening is so located in the valve stem as to require depression of thevalve stem before the openings are all in alinement. Thus if it isdesired to permanently keep the throttle valve 49 open, it is onlynecessary that the valve stem 59 be depressed by means of fingerpressure exerted upon the thumb piece -17 to depress the valve stem andaline the openings, then inserting a nail ('30 or other convenient pinthrough the openings. A. heat insulating handle (31, is mounted upon atubular member 45, and l carries at its outer end a thumb piece 44,which is connected with an adjustableneedle valve (32. The head +12, ofthe adjustable needle valve (39., is arranged to be seated within theburner tip 57, in such manner as to detcrn'iine the maximum amount offuel which can be introduced through the burner tip 57. A drip pan il,is arranged immediately beneath the burner tip 57 and the wind gluirifl58 in such manner as to form a receptacle into which liquid fuel may beadmitted through the burner tip for ignition, to permit pro-heating ofthe tool preliminary to lighting of the heating flame. A casing 63,

extends forward from the burner tip and substantially forms a flamejacket. The casing 63 is provided with air ports 6%, that are adapted toadmit a sul'licient amount of air within the jacket to properly oxidizea hydro-carbon oil passing from the burner tip 57. The casing (33 isprovided with lugs (35, which lugs are adapted to carry supportingprongs 66, that terminate in small spherical knobs 40.

As disclosed in Fig. 2, it will be noted that the prongs G6 are arrangedaround the casing 63 at substantially ninety degrees apart, and thusform convenient supports for maintaining the hot casing 63, or burnerhead, from coming in contact with the work table or other support uponwhich the tool may be resting. The knobs d0, carried upon the supportingprongs 66, form convenient attaching members for a stand 74, when it isdesirable to use the tool as a heating torch in a more or lessstationary position.

A soldering iron or work head 67, is arranged to be removably attachedwithin the casing 63, and when it is desirable to use the device as ablow pipe or a heating torch, it is only necessary to remove thesoldering iron or work head 67 from the casing 63. The soldering iron isprovided with a heat conducting member 68, which lies within and isspaced apart firm the flame casing 68. The heat conducting member 68, isprovided with openings 69, in order to permit the hot gases to passfreely through the walls of the heat conducting member. The work face ornose of the soldering iron 67, is provided with longitudinal openings71, which lead from the face of the iron to the interior of the heatconducting member 68, and form a passage permitting the exhaust of hotgases, at the same time directing hot gases from the flame through theburner head to the work point. One of the openings 71, is preferablyconnected by means of a by-pass 72, with a reservoir 73. The by-pass'72, is arranged to connect with the reservoir 73 near the upper portionof the reservoir in such manner that any fluid material, such as moltensolder, carried by the reservoir, will not tend to escape through theby-pass 72, unless the tool is tipped a considerable degree toward thework point. It will be noted that the arrangement of the solderreservoir 73 is such as permits of a convenient manner of deliveringsolder to the work point by the use of only one of the operators hands,leaving the other hand free to support himself when doing aerial work,or leaving the other hand free to hold articles to be worked upon,

As many changes could be made in the device without departing from thescope of the invention, I desire that the specification and drawingsshall be taken as illustrative and not in a limiting sense.

(that is claimed is 1. In a device of the class described incombination, a handle, a burner, a valve seated in said burner, main andauxiliary fuel ducts communicating with the burner, a throttle valve insaid main fuel duct, means for regulating the auxiliary supply of fuelto the burner when the throttle valve is closed, a flame jacket, asoldering head detachably mounted therein, said soldering head beingprovided with longitudinal canals therein, a solderrreservoir therein,and means of communication between said reservoir and one of said canalsfor the passage of solder.

2. A self heating tool comprising a handle, a needle valve passingthrough said handle and coiiperating with a threaded portion of saidhandle to permit-the regulation of said needle valve, a seat for saidneedle valve below said threaded portion, a chamber between said seatand said threaded portion, a burner, means cooperating with said chamberfor supplying fuel to the burner, and a spring valve located within saidmeans eXteriorly of said chamber for controlling the flow of fuel to thechamber.

3. In a device of the class described in combination, a handle, aburner, means for supplying fuel to said burner, a valve for regulatingthe discharge of fuel from said burner, a throttle valve for controllingthe supply of fuel to said regulating valve, a flame jacket forming acombustion chamber, and a soldering head carried by said flame jacket,said soldering head comprising a head portion and a tubular portionextending within said flame jacket and provided with transverseopenings, said soldering head being also provided with conduits leadingfrom the tip of said soldering head to the combustion chamber.

4. In a device of the class described-in combination, a burner, meansfor supplying fuel thereto, means for regulating the dis charge of fuelfrom said burner, a throttle valve adapted to control the supply of fuelto said regulating means, a flame jacket carried by said burner andforming a combustion chamber, and a soldering head mounted in said flamejacket, said soldering head being provided with openings convergingtoward the point of said soldering head and leading into said combustionchamber, substantially as described.

5. In a device of the class described in combination, a handle, a burnercarried by said handle, a flame jacketcarried forward of said burner andforming a combustion burner, and a solderin head carried by said vergingconduits leading into said combusflame jacket,' said solc ering headcompristion chamber.

ing a Working head and a tubular portion extending Within said flamejacket and spaced apart from the Walls of said. flame jacket the tubularportion being provided with openings in the Walls thereof, and the 1Working head being provided With con- JNO. TREBING, Guardian for John L.F innegan.

Witnesses:

J. A. WELLs, W. H. I-IALBERT.

copies of 1:111: patent may be obtained for five cents each, byaddressing the Commissioner of Patents. Washington, I). O.

